Characterization of Unknown Bridge Foundations

Ng, Tang-Tat; Maji, Arup; Rashidyan, Saman; Jwary, Ali F

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Characterization of Unknown Bridge Foundations

2017-05-06
By Ng, Tang-Tat ; Maji, Arup ; Rashidyan, Saman ; ...

File Language:

English

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Creators:

Ng, Tang-Tat ; Maji, Arup ; Rashidyan, Saman ; Jwary, Ali F
Corporate Creators:

University of New Mexico, Albuquerque. Department of Civil Engineering
Corporate Contributors:

New Mexico. Department of Transportation. Research Bureau ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Best Practices Bridge Foundations Nondestructive Tests
Publication/ Report Number:

NM13STR-02
Resource Type:

Tech Report
Geographical Coverage:

United States ; New Mexico
Corporate Publisher:

New Mexico. Department of Transportation
Abstract:

The Federal Highway Administration has reported 85,000 bridges nationwide that have no design or as-built plans identifying the type, depth, geometry, and materials of the foundations. It is evident that an unknown percentage of these bridges with missing foundation data could also be highly vulnerable to scouring that is induced by water flow coupled with erodible soils. Currently, the New Mexico Department of Transportation (NMDOT) has identified more than 300 bridges with unknown foundations. It is crucial to identify the bridge foundation characteristics, particularly the type and depth of foundations, in order to determine the susceptibility to scour. Characterization of these unknown foundations is also necessary for planning retrofitting of each bridge substructure. Based on the most comprehensive study of various nondestructive testing methods in National Cooperative Highway Research Program project 21-5 and other case studies, the low-cost nondestructive testing methods such as Sonic Echo/Impulse Response, Parallel Seismic, and Induction Field can be used to determine the unknown foundation depth. Field tests on bridges in New Mexico and numerical simulations were performed to identify the best practice for conducting these nondestructive tests. Guidelines on evaluation of unknown foundations and on conducting nondestructive tests are provided.
Format:

PDF
Funding:

C05626
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:4cf280d31e38b66222889282f307772a21e39b87ed6b25802a250d8f0526e9e12b307f3fe16dcb3511b9eb8e9e0958b7548b203b50c448caf33d33926021fda4
Download URL:

https://rosap.ntl.bts.gov/view/dot/87108/dot_87108_DS1.pdf
File Type:

[PDF - 13.27 MB ]

File Language:

English

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